@mixin span($col,$margin:12px,$border:0px,$color:red) {
    @if $border != 0px{
        @include border($border,$color);
    }
    width: ($container_width /12 ) * $col - $border * 2 - $margin * 2 ;
    margin: 0 $margin;
    float: left;
    display: inline;
}
@mixin smallspan($col,$sm_col,$margin:12px,$border:0px,$color:red) {
    @if $border != 0px{
        @include border($border,$color);
    }
    $width : (($container_width /12 )* $col - $margin * 2)/12 *$sm_col;
    width: $width - $border * 2 ;
    margin: 0;
    float: left;
    display: inline;
}

@mixin spanone($margin:12px,$border:0px,$color:red) {
    @if $border != 0px{
        @include border($border,$color);
    }
    width: $container_width - $border * 2 -$margin *2  ;
    margin: 0 $margin;
}


